Moderate

As skies clear across the Interior from west to east tonight, temperatures will drop into the low to mid 30s by Tuesday morning. Frost is possible in some locations, particularly in the Lower Tanana, Upper Koyukuk and typical cold valley locations across the Interior. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

* WHAT...Heat index values up to 105 expected. * WHERE...Barber County. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Heat index values near or above 105 expected. * WHERE...Portions of central, eastern, north central, southeast, and western Arkansas. * WHEN...From noon to 8 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Heat index values up to 104 expected. * WHERE...Portions of southeast Kansas and central, east central, south central, southwest, and west central Missouri. * WHEN...From noon Tuesday to 7 AM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...South winds 15 to 25 mph with gusts up to 35 mph expected. * WHERE...In Arizona, Lake Mead - AZ side and Lake Mohave - AZ side. In Nevada, Lake Mead - NV side and Lake Mohave - NV side. * WHEN...Until 6 PM PDT /6 PM MST/ this evening. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Winds this strong can make driving difficult, especially for high-profile vehicles. Use extra caution.

* WHAT...Dangerous rip currents. * WHERE...Gulf-facing beaches, including the Matagorda Peninsula, Brazoria County beaches, Galveston Island and the Bolivar Peninsula. * WHEN...Through Tuesday morning. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Swim near a lifeguard and away from rocks, jetties, and piers. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If

* WHAT...Heat index values up to 105 expected. * WHERE...Portions of northwest and west central Arkansas and northeast Oklahoma. * WHEN...From 1 PM to 7 PM CDT Tuesday. * IMPACTS...Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning

* WHAT...Heat index values up to 108 expected. * WHERE...Portions of southwest Illinois and central, east central, and southeast Missouri. * WHEN...From noon to 10 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time

At 1105 AM CDT, Doppler radar indicated strong thunderstorms along a line extending from 2 miles east of Gateway to 4 miles southwest of Garfield to 2 miles northeast of Bella Vista. Movement was east at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down small tree limbs and blow around unsecured objects. Locations in or near the path include... Rogers... Bentonville... Bella Vista... Eureka Springs...

* WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...North Central Oregon. * WHEN...From 11 PM this evening to 5 PM PDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.